<?php
// IP地址定位
namespace app\shop\controller;

use think\Controller;

class Location extends Controller
{
    function GetIp()
    {
        $realip = '';
        $unknown = 'unknown';
        if (isset($_SERVER)) {
            if (isset($_SERVER['HTTP_X_FORWARDED_FOR']) && !empty($_SERVER['HTTP_X_FORWARDED_FOR']) && strcasecmp($_SERVER['HTTP_X_FORWARDED_FOR'], $unknown)) {
                $arr = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
                foreach ($arr as $ip) {
                    $ip = trim($ip);
                    if ($ip != 'unknown') {
                        $realip = $ip;
                        break;
                    }
                }
            } else if (isset($_SERVER['HTTP_CLIENT_IP']) && !empty($_SERVER['HTTP_CLIENT_IP']) && strcasecmp($_SERVER['HTTP_CLIENT_IP'], $unknown)) {
                $realip = $_SERVER['HTTP_CLIENT_IP'];
            } else if (isset($_SERVER['REMOTE_ADDR']) && !empty($_SERVER['REMOTE_ADDR']) && strcasecmp($_SERVER['REMOTE_ADDR'], $unknown)) {
                $realip = $_SERVER['REMOTE_ADDR'];
            } else {
                $realip = $unknown;
            }
        } else {
            if (getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), $unknown)) {
                $realip = getenv("HTTP_X_FORWARDED_FOR");
            } else if (getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), $unknown)) {
                $realip = getenv("HTTP_CLIENT_IP");
            } else if (getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), $unknown)) {
                $realip = getenv("REMOTE_ADDR");
            } else {
                $realip = $unknown;
            }
        }
        $realip = preg_match("/[d.]{7,15}/", $realip, $matches) ? $matches[0] : $unknown;
        return $realip;
    }

    function GetIpLookup($ip = '')
    {
        if (empty($ip)) {
            $ip = self::GetIp();
        }
        $res = @file_get_contents('http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js&ip=' . $ip);
        if (empty($res)) {
            return false;
        }
        $jsonMatches = array();
        preg_match('#\{.+?\}#', $res, $jsonMatches);
        if (!isset($jsonMatches[0])) {
            return false;
        }
        $json = json_decode($jsonMatches[0], true);
        if (isset($json['ret']) && $json['ret'] == 1) {
            $json['ip'] = $ip;
            unset($json['ret']);
        } else {
            return false;
        }
        return $json;
    }

    public function index()
    {
        $ip = $_SERVER["REMOTE_ADDR"];
        $ipInfos = self::GetIpLookup($ip); //baidu.com IP地址

        if ($ipInfos) {
            $data = $ipInfos['province']."省".$ipInfos['city']."市";
        }else {
            $data = "IP地址异常";
        }

        return $data;
    }

    public function mobileArea()
    {
        $ip = $_SERVER["REMOTE_ADDR"];
        $ipInfos = self::GetIpLookup($ip); //baidu.com IP地址

        if ($ipInfos) {
            $data = $ipInfos['city']."市";
        }else {
            $data = "IP地址异常";
        }

        return $data;
    }

}

